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Current detecting device and attaching structure thereof

a current detection and detection device technology, applied in measurement devices, electrical testing, instruments, etc., can solve the problems of increasing the number of electric equipments of vehicles and the rapid increase in the consumption of vehicle batteries, and achieve the effect of stable output and small occurrence of output errors

Active Publication Date: 2013-06-20
YAZAKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention aims to provide stable output with minimal errors. This is achieved by analyzing data and minimizing any deviation from its intended value. The invention has been described in detail through reference to the accompanying drawing.

Problems solved by technology

Recently, the kinds and the number of electric equipments of a vehicle are increasing rapidly, and the consumption of the vehicle battery is becoming rapidly.

Method used

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  • Current detecting device and attaching structure thereof
  • Current detecting device and attaching structure thereof
  • Current detecting device and attaching structure thereof

Examples

Experimental program
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Effect test

first embodiment

[0048]FIG. 1 is a perspective view showing a state where a current detecting device according to the first embodiment of the invention is attached to a battery, FIG. 2 is an exploded perspective view of the current detecting device, FIG. 3 is a perspective view showing the constitution of a busbar used in the current detecting device, and FIG. 4 is a main portion sectional view of the current detecting device.

[0049]As shown in FIGS. 1 to 4, a current detecting device 10 is constituted as a battery terminal unit to be attached to a battery post 2 protruding from a top face of a battery 1. The current detecting device 10 includes a busbar 30, a magneto-electric converting element 50, a housing 20 and a shield plate 60. An electric current flows through the busbar 30. The magneto-electric converting element (for example, Hall element) 50 is mounted on a circuit board 51 and is arranged close to this busbar 30, and outputs an electric signal in response to a magnetic field generated by ...

second embodiment

[0065]In the second embodiment shown in FIG. 6, a thin plate-shaped cover 80 made of resin is arranged on the connecting plate 62, and a pin 26P is inserted into a through-hole 80P of the cover 80 and thereafter fused, whereby the cover 80 is fixed.

third embodiment

[0066]Further, in the third embodiment shown in FIG. 7, a thick plate-shaped cover 81 made of resin is arranged on the connecting plate 62, and a pin 26P is inserted into a through-hole 80P of the cover 81 and thereafter fused, whereby the cover 81 is fixed. The thickness of the cover 81 in this case is set so that there is not much influence even in case that a magnetic substance comes close to the cover 81 or adheres to the cover 81.

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PUM

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Abstract

A current detecting device includes a busbar, a magneto-electric converting element that outputs a signal in response to a magnetic field generated from the busbar, a housing that accommodates the busbar and the magneto-electric converting element, and a shield plate that is attached to the housing. The shield plate is formed in the U-shape in cross section in which an opening is formed between leading ends of a pair of side plates. The leading ends of the pair of side plates of the shield plate are located more inside than an opening peripheral edge of an opening portion of the outer frame portion so that a predetermined distance is secured between the leading ends of the pair of side plates of the shield plate and the opening peripheral edge of the opening portion of the outer frame portion.

Description

TECHNICAL FIELD [0001]The present invention relates to a current detecting device which is adapted to grasp the degree of consumption of a vehicle battery by detecting an electric current flowing through a wire harness of a vehicle, and to an attaching structure of the current detecting device.BACKGROUND ART[0002]Recently, the kinds and the number of electric equipments of a vehicle are increasing rapidly, and the consumption of the vehicle battery is becoming rapidly. Therefore, a value of electric current flowing through a wire harness connected to the battery is measured by a current detecting device, and on the basis of the measured data, the degree of consumption of the battery is grasped.[0003]As a conventional current detecting device used for such the purpose, a device described in, for example, PTL 1 has been known. FIG. 9 is an exploded perspective view of a current detecting device described in PTL 1, and FIG. 10 is a sectional view of a main portion thereof.[0004]As show...

Claims

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Application Information

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IPC IPC(8): G01R19/15
CPCG01R15/207G01R19/15G01R31/3696G01R31/364
Inventor KAWAGUCHI, YASUNORIHASHIO, SHINICHIMOCHIZUKI, TOSHIROU
Owner YAZAKI CORP